Chaotic behavior of quantum cascade lasers at ignition

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The ignition of Quantum Cascade Lasers can occur from a state of oscillating field domains. Here, the interplay between lasing and the kinetics of traveling domain boundaries provides complex oscillation scenarios. We analyze our numerical findings in detail for a device operating at terahertz frequencies and manifest chaotic evolution by positive Lyapunov exponents. This shows that these important devices can exhibit chaotic behavior even without periodic driving, which needs to be taken into account in their design.
Antal sidor11
TidskriftCommunications in Nonlinear Science and Numerical Simulation
StatusPublished - 2021

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